Antiskid device



1934- H. G. METCALF ET AL 1,968,952

ANTI SKID DEVICE Filed Oct. 1'7, 1932 2 27 77 mf f 19 Harold c996 fiennqi'luff. .30 we 11/- Jaw 5 Patented Aug. 7, 1934 g 1,968,952

' {UNITED [STATES PATENT or ies ANT ISKID DEVICE Harold ,G. Metcalf and Kenneth H. Bowen,

Auburn, N. Y., .assignors, to Columbian Rope Company, Auburn, N. Y., a corporation of New Application October", 1932,- Serial No. 638,201

' 3 Claims. (01. 152-14) This invention relates to improvements in anti In the form of invention illustrated in Figs; skid devices for vehicles, and has for its" primary 1 to 4, the anti-skid element 10 is applied'to the objectthe provision of a device which is simple wheel in spirals, extending transversely of the and efiicient in operation; is economical to manu-' wheel tread and with the spirals of the two rear 5 facture;and which permits the device to be readily wheels of the vehicle laid in opposite directions. applied to and removed from thevehicle. i With this application of two elements to the two Another object contemplates the production of wheels, skidding of the vehicle will be confined an anti-skid device that will be noiseless when in to a line extending in the normal direction of use and will not set up vibration in the vehicle trafiic of the vehicle and all lateral skidding body.

A still further object is the production of an Preferably, the eleinentlfl is formed of arubber anti-skid device from which substantially maxiexterior and means which render said element mum Wear can be obtained, notwithstanding the substantially 'inextensible. The important facfact that the present device is of considerably less tors are that the elements shall possess sufiicient weight than the usual anti-skid devices. resiliency to eliminate noise and prevent setting 70 More specifically, the present devicepreferably up of vibration in the vehicle body, and: that it consists of an elongated member adapted to he shall have a yielding, non-abrading exterior sur spiralled around the wheel of the 'vehicle, two of face, to prevent defacement of the wheel. 'Ihe the devices constituting a; pair which may be element 1:0 is spirally wrapped around the wheel applied to the rear wheels of the vehicle. In this 32, asshown in Fig.1,with its ends attached to form of the invention, said member is of nonthe wheel spoke 31 and portions intermediate its circular cross-section, this construction being ends traversing the Wheel tread. It will be seen obtained by utilizing laterally spaced core memthat those portions of the element traversing bers, preferably two. The laterally spaced core the wheel tread are the equivalent of the cross members increase the width of the anti-skid members of the ordinaryanti-skid device. Prefdevice so that the load is distributed over a coma y, e me ber 10 s non-circular in cross paratively large area, thus prolonging thelife section, being provided with a comparatively of said device, particularly in that pulverization broad flat surface 10a, adapted to lie against and disintegration of the core members, which are the tread of the vehicle wheel. The opposite face,

o preferably fiber, twisted or untwisted, is pre-r Or that surface of the element which engages vented, the roadway is preferably formed with an ir- With these and other objects in view the inregular surface Which will increase its capac ty vention consists in certain details of construction to resist skidding- AS Shown in s- 1 t0 this and combinations and arrangements of parts, all s preferably p h d y having the element 35 as will hereinafter be more fully described and form d With a pl ral y f l t r lly pa d c re the novel features thereof particularly pointed out members t rubber covering 12 being formed in th appended l i with the depression 10b which may or may not In the accompanying drawing, extend throughout the length.

Figure 1 is a perspective view of a. vehicle wheel The use of the dual core members 11 also lends I 40 showing the invention, in one of its embodiments, to the easy attachment of member 10 to the applied thereto; vehicle wheel. That is, the ends of the element Fig. 2 is a perspective view of a portion of the may be bifurcated on aline between the two cores anti-skid element portrayed in Fig. 1, illustrat-. to form the bifurcations 25, 26 at each of the ing the dual core construction; opposite ends and the fastening member which 7 45- Fig. 3 is a plan view of the device shown in may be in the form of the attachment 19 formed 109 Fig. l; with eyelet 20 and clamping screw 21 permanently Fig. 4 is a section through one of the wheel attached to one of the bifurcations at each end. spokes illustrating the mode 'of attaching the With this construction, the bifurcations at each member shown in Fig. 1; end may be placed around the spoke or spokes 5Cy Fig. 5 is a detail view of a cross member, emof the wheel and their free ends fastened tobodying the present invention that may be utilized gether as shown in Fig. 4, thereby securely atin making up a modified form of anti-skid device; taching the device on the wheel. and. In lieu of a. continuous member 10, the inven- Fig. 6 is a sectional View on the line 6-6 of tion may readily be incorporated in cross mem- 55Fig. 5. bers such as are illustrated in Figs. 5 and 6. 110

will be eliminated.

These cross members, indicated at 40, are adapted to be secured, as by the clamping means 41, to side members 42 that extend circumferentially around the sides of the wheel. These individual cross members are formed with dual cores 11 which lend width to the member so that the latter may be formed with the broad, flat surface 10a to engage against the vehicle wheel, but, in lieu of a continuous depression in the road-engaging surface of the cross member, a series of longitudinally extending depressions 43 may be formed in the road-engaging surface.

In both forms of the invention, the portions of the device that extend across the vehicle Wheel tread receive the greatest amount of Wear along their edges which first come in contact with the roadway. These edges which might be called the leading edges naturally have the greatest amount of abrasion imposed thereon, and, consequently, wear away more quickly than in the case of the rear edge of the tread-traversing portions. However, this does not have any serious affect on the life of the device, because its construction is such that the tread-traversing portions may be readily reversed so that, after one edge has become worn, the device may be applied reversely and the wear placed upon what would then be the unworn edge.

As previously mentioned, the core members 11 are preferably of fiber. These fibers may be twisted together in any desired form, although a conventional three-strand rope is shown in the present instance. In each instance, however, the cores are preferably impregnated with a solution of latex or the equivalent thereof, which will effeet a lubrication of the fibers, after the rubber covering 12 is vulcanized. The core not only adds tensile strength to the anti-skid element, but it renders it substantially inextensible, and aids in maintaining the normal shape or cross section of the element. Furthermore, when the portions of the element traversing the Wheel tread engage the road surface, there may be a tendency for the element to twist, but the core members will resist such twisting motion, or augment the untwisting of the element as it passes out of contact with the road surface in the event the element may have twisted to any extent. This is true of both forms of the invention shown in the present instance.

This application is a continuation in part of applicants co-pending application, Serial No. 605,962.

What we claim is:

1. An anti-skid device comprising an element adapted to traverse the tread of a vehicle wheel, said element being composed of a plurality of laterally spaced core members and a covering of rubber, the tread engaging face of said element being broad and fiat and the opposite face of said element being recessed intermediate the individual core members.

2. An anti-skid device comprising an element adapted to traverse the tread of a vehicle wheel, said element being composed of two latera ly spaced longitudinally extending groups of fibers and a rubber covering enclosing said fibers, the tread engaging face of said element being comparatively broad and flat.

3. An anti-skid device comprising an element adapted to traverse the tread of a vehicle wheel, laterally spaced core members in said element, the ends of said element being bifurcated with a core member in each bifurcation, and attaching means permanently secured to one bifurcation at each end of said element, the other bifurcation at each end being detachably secured to said attaching means.

HAROLD G. METCALF. KENNETH H. BOWEN. 

